Received: 1 November 2017
Accepted: 7 January 2019
First Online: 14 January 2019
Ethics approval and consent to participate
: The study was approved by ethical committee of Shahrekord University of Medical Sciences, Shahrekord, Iran under the Ethics code of 125391 and the ethical Committee of Iran University of Medical Sciences 93–22311. Also, all subjects (or the person having the care and custody of the child) signed an informed consent form regarding the participation in the study and a consent for publication.
: Not applicable.
: The authors declare that they have no competing interests.
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